Phys. Rev. Lett. 79, 3435–3438 (1997)Nonlocal Dielectric Saturation in Liquid WaterReceived 9 June 1997; published in the issue dated 3 November 1997 The linear and nonlinear dielectric response of water to spatially varying electric fields of different wavelength and field strengths is calculated by means of molecular dynamics computer simulation for a central force model of water. We find that nonlinear effects are strongest at k≈3Å-1, where the linear response function χ(k) = 1-1/ε(k) has its main maximum. For small k the response is linear up to field strengths of E0≈1V/Å. A phenomenological theory is discussed which reproduces the main nonlinear effects found in the simulation. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.79.3435
DOI:
10.1103/PhysRevLett.79.3435
PACS:
61.25.Em, 61.20.Ja, 77.22.Ch
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